Lock



Dzz, 1931. 'N. B. HURD 1,837,441

LOCK- Filed Sept. 25, 1930 n-mllll ATTORNEYS.

Patented Dec. "225 i 1931 NORMAN n. Bunn, or fNnwINGfoN, YooN Nnorronr,AssrsfNon To THE' AirniaroAN ,HARDWARE oonronafrromor Naw narrAiN.ooNNno'rioU-e, a conPonATroN on l CONNECTICUT Appncfiomea"`septembr'25,'1a3o. semaine. 484,345.

This invention relates to locks lfor doors and the like. 5 v Y,

invention is tto simplify thejlocl` mechanism without sacrificingstrength, durability or operativeness. Y y n Y p A Many advantages willbeapparent toa mechanic skilled inthis art from'afr'eading of thefollowing specification and an enamina-tion of the accompanying drawing,which illustrates a preferredform'of the inven-' tion, VitV being:understood that "various changes and modifications may bemade from theform shown and described withoutc avoiding the scope of saidinvention'and `the claims therefor. f

In the drawings- Fig. lis a view ofthe rear or innersideof the lock casewith the cap removed, said viewv being partly brokenaway to show detailsof construction; f

Fig. 2vislanedge view of the {Inecha'nismv shown in Fig- 1,'looking up,a portionofthe f oase being showninsection with'the keeper 25 shownpartly in elevation andpartly in sec` tion; ff" 1 d Fig. 3 is aperspective viewof construction.`V "i A A, k

l represents the lock case, havingfatits jecting lugsor ears 8 lis `a'keeper having one or more lugs 'or ears i adapted to stand in thespaces betweenthe lugs 2-2 is closed. One or morebolt-'ends are carriedin one or more of theears'Q, the` saine be``V ing movable toward and`from; the ears l-fli,

which latter have passages topreceive the ends.V of the bolts 5 for thelpurpose 'of locking the door, the mechanismwithin thelock case beingdesigned tojproject and vretract the bolt ends 5 at the will of theoperator. 6 is a bolt slide mounted Vwithin the loclrcasel berestanti ii Y the stoprll, Vthe V roll-back l0 first becomesg Itl next engagesforward edge oneormore forwardly pro! v, when the door to vwhichythelock'fis applied tween two guides 7--7` Theboltends 5 are' carriedby the slide 6 so vas to be moved there" with. lt-will be noted vthatthe slideoper` bolt isparall'el or generally-parallel to thef i f frontedgeof the lock; Broadly speaking `the main object 'of fthe vAt thelrear of the bolt slide "6 are two spaced lugs 8*8, which are designed tobeA` engaged by roll-back mechanism, wherebyV the slide may be shiftedup and down in the case' from its locking toits unlockingposi-`tionaan'd vice versa. .9V is a knob suitably lmountedy on the indoorside lofl thelock case 1,-'so that it may be freely rotated by hand.

10 ,is a roll-back mounted on the knob shank within. the case, the endof said roll-back being` adapted to alternately engage the lugs 8,-8,not only for the purpose of shifting thefboltslide 6, but for the addedpurpose "of: blocking said slide Vagainst movement when it is shifted toeither of its extremepos'itions. In Fig. 1 of the drawings it `will beseenthat the end of the roll-back 10 bears against the end' of lug 8,Vpositively holding the `boltslide 6 in theunlocling position.Twostopsl'l-ll Vlimit the turning movement of the roll-back l0. In Fig.l ofthe drawing the roll-back 10 restsagainst the stop ll. and isyieldinglyheld insaid posi-- tion by a spring 12.` When the roll-back 10is turned away from the stop llandtoward freed from the lugV 8". againstthe side rof the lugV 8, so thatthe con? tinued rotation of saidroll-bacl will move thebolt slide 6 toward'the locking position. Whenvthe slide 6 reaches its locking positionthe end of the roll-back 10leaves the side of the lug 8 and will bear against the end of said lug,"thus positively blocking a reverse movement of the slide 6. y

'4' 14 "is a key-controlled roll-back, which is suitably: mounted forrotation on the cover or cap l5. 11G represents a portion of a cylinderlock of Vany suitable construction operable by an appropriate key, notshown but well understood in theV art. 17 is a spindle, whichisrotatable by the use of a suitable key in' a cylinder lock. This spindlelits into a passage through the hub of the roll-back le-,so that whenthe spindle is turned it willv turn said roll-back. lWhen the lzey iswith'- drawn from the lock the normal position of the. key-'controlledroll-back V14 is that shown ses.Y

in Fig. 1. The cylinder lock, if desired, may be made adjustable in anysuitable way to accommodate the lock ot doors of diierent thicknesses.Such adjustments being well known I deem it unnecessary to describe thesame herein, although one such adjustment is shown in Fig. 2 ot thedrawing.

The spindle 17 is sufliciently long to permit said adjustment and whenclose adjustment is made the inner end of the spindle may entend freelythrough the roll-back 10 and knob shank 9, so that it may be turnedindependently thereof.

18 is what I will term a coupler.V This coupler is pivoted at 19 to thelock case, so that it may oscillate. The pivot 19, in the particularform shown, is located approximately at the end of the key-controlledrollback 14. The inner part of the coupler is cut away to provideclearance, while at the upper and lower edges of said coupler areprovided two olset Vflanges or bearing shoulders 18-18, which stand inthe path of rotation of the end of the roll-back 14. Between theshouldered portions 18-18 is a bridge 2O in which there is a slot 21. Apin 22 on the knob-controlled roll-back 10 projects into said slot 21,as best seen in Fig. '1.

rlhe operation of the lock is as follows. As already stated, the insideknob 9 may be operated at any time to turn the roll-back 10 to operatethe bolt slide 6, to lock or unlock the door. To operate the lock fromthe outside a suitable key is introduced into the cylinder' lock 16.rlhis permits the roll-back 14C to be turned. Assuming theparts stand inthe unlocking position shown in Fig. 1; it the roll-back 14 is turned ina clockwise direction its end will clear the shoulder 18 on the coupler,and as it continues to turn it will engage the shoulder 18 on saidcoupler, so as to rock said coupler in a direction to rotate theroll-back 10, which it does through the medium of the coupler engagementwith the pin 22. This necessarily causes the roll-back 10 to turn to1first free and then shift the bolt slide from the unlocked to thelocking position, as previously described. Wlhen the roll-backl() hasreached the locking position it bears against the end of the stop 11, inwhich position it is yieldingly held by spring 12. The design of theshoulder 18 is such that it provides clearance for the end of thekey-controlled roll-back 11i when the door is locled, thus permittingsaid roll-back to continue to turn until it reaches its normal position,shown in Fig. 1, whereupon the key may be withdrawn. The door will thenbe locked and will remain locked until. it is unlocked either by theknob 9 at the inside or by use of a key at the outside.

From the foregoing it will be seen that f. the roll-back 10 performs thedouble function of moving the locking bolt ends into the locking or theunlocking position and oi holding the said bolt ends in either of saidpositions positively against movement, thereby eliminating the necessityof one or more tumblers, tumbler springs, and associated partsheretofore employed in this type of lock.

I claim:

1. In alock, a keeper, a case, a bolt movable in a direction generallyparallel to the front tace of the case for engagementwith said keeper,movable bolt carrying` means within said case, a roll-back operable fromone side of the case and engageable with said means to move the sameunder one condition and block the same against movement under anothercondition, a second roll-back operable from the other side of said case,apivotally mounted coupling means between the lirst and second mentionedroll-backs to transmit rotary motion from the latter to the former.

2. In a lock, a keeper, a case, a bolt movable in a direction generallyparallel to the front face of the case for engagement with said keeper,movable bolt carrying means within said case, a roll-back operable fromone side of the case and engageable with said means to move the sameunder one condition and block the same against movement under anothercondition, a second roll-back operable from the other side of said case,a pivotally mounted coupling means between the first and secondmentioned roll-backs to transmit rotary motion from the latter to theformer, said coupling means being normally in engagement with oneroll-back and at all times normall out of engagement with the otherroll-bac 3. In a lock, a keeper, a case, a bolt movable in a directiongenerally parallel to the front face of the case for engagement withsaid keeper, movable bolt carrying means within said case, a roll-backoperable from one side of the ca-se and engageable with said means tomove the same under one condition and block the same against movementunder another condition, a second roll-back operable from the other sideof said case, a pivotally mounted coupling means between the lirst andsecond mentioned roll-backs to transmit rotary motion from the latter tothe former, said coupling means being normally in engagement with oneroll-back at all times and normally out of engagement with the otherroll-back, and a key actuated means for rotating said second mentionedroll-back.

f1. In a lock, a keeper, a case, overlapping lugs on said keeper andcase, a bolt in the lug on the case and movable transversely thereof toengage the lug on the keeper, movable bolt carrying means inside thecase, two roll-backs inside said case for moving said bolt carryingmeans, one of said roll-backs rollback.

5. In a lock, a keeper, a case, overlappingV lugs on said keeper andcase, a bolt carried by a case lug and movable to engage a keeper lug,two rollbacks in saidcase for operating v said bolt and operablerespectively from opposite sides of said case, one roll-back operatingindirectly on said bolt through the medium of the otherrollback, anda'movablel coupling pivoted on the case to transmit movement from oneroll-back to thevother 6. In a lock, a keeper, a case, .overlapping lugson said keeper and case, a'boltcarried by a case lug and movable toengage a keeper lug, two roll-backsin said Case for operating said boltand operable respectively from opposite sides of said case, one rollbackoperating indirectly on said bolt through the medium of the otherroll-back, with a pivotally mounted coupling means between saidroll-backs, and with a stationary mountinv for said coupling means.

In a lock, a keeper, a case, overlapping lugs on Vsaid keeper and case,a bolt carried by a case lug and movable to engage a keeper lug, tworoll-backs in said case for operating said bolt and operablerespectively from opposite sides of said case, one roll-back operatingindirectly on said bolt through the medium of the other roll-back, withapivoted coupling means betweensaid roll-backs, with key-controlledmeans for normally holding the indirectly operating roll-back out ofengagement with said coupling means, and with a stationary support forsaid movable cou-l pling means. a

8. In a lock of the character described, a case, a movable bolt carryingslide therein, a roll-back operable from the indoor side of said case tomove said slide to advance and retract said bolt and operating to blocksaid slide in the bolt locking posit-ion, a secondV roll-back operablebya key from the outdoor side of saidrcase and operable to unblock said'slide and move said bolt through the medium of the first mentionedroll-back,

Va pivoted coupling between saidv roll-backs,

to` transmit. movement from the key operable roll-back to the otherroll-back.

9. In a lock of the character: described, Ya case, a movable boltcarrying slide therein,

a roll-back operable from the indoor side;

of said case to move said slide to advance and retract said bolt andoperating to block said slide in the bolt locking position, a sec-` ondroll-back operable by la key from the outdoor side of said case andoperable tok unblock said slide and move said bolt through the medium ofthe iirst'mentioned' rollsback,

j backs, anda stationary pivot support there-V for.

Vl0. In a'lock of the character described, a

case, a movable bolt carrying slide therein, a roll-back operableV fromthe indoor side ofsaid case to move said slide to advance and retractsaid bolt and voperating to block said slide in the bolt lockingposition, a second roll-back operable by a key from the outdoor side ofsaid case and operable to unblock said slide and move saidbolt throughthe medium of the lirst mentioned roll-back. with a coupling meansbetween said rollbacks, said key operable roll-back being normally outof engagement with said coupling means, and a' stationary-pivot supportfor said coupling.

` 11. In a lock of the character described, a case, a movable boltcarrying slide therein, a roll-back operable from the indoor side ofsaid case to move said slide to advance and retract said bolt andoperating to block said slide in the bolt locking position, a secondrollback'operableby a key from the outd'oor side of said case andoperable to unblock said slide and move Vsaid bolt through 'the mediumof the first mentioned roll-back,

with anl oscillating-coupling'means pivoted adjacent one end to saidcase and engaging the iirst mentioned roll-back adjacent its other end.V

12. In a lock of the character described', a case, a movable boltcarrying slide therein,

.a roll-back operable from the indoor side of said'case to move saidslide to advance and retract said bolt and operating to block said slideinthe bolt locking position, a second roll-back operable by a key fromthe outdoor side of said case and operable to unblock said slide andmove said bolt through the medium of the first mentioned rollback,

with an oscillating coupling means pivoted adjacent one end tosaidcaseand engaging the iirst mentioned' roll-back adjacent its otherend, with shoulders on said coupling -means for engagement by said keyactuated roll-back. e

13. In a lock, a case, a lock bolt, a rollback for throwingsaid bolt,asecond rollback, couplingvmeans for causing said second roll-back toactuate said lirst mentioned rollback to throw sai-d bolt, and a pivoton which said coupling is mounted to rock.

NORMAN B. HURD.

with a coupling means between said roll-

